单项选择题
A.1MΩ B.5MΩ C.10MΩ D.15MΩ
A.5ppm B.10ppm C.15ppm D.20ppm
A.±2.0% B.±2.5% C.±3.0% D.±3.5%
A.±1.5% B.±2.0% C.±2.5% D.±3.0%
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